WANDANKER

Description

[0001] The invention relates to a wall anchor for securing movable objects to a wall, in particular to a building wall. A securing device with the features of the preamble of claim 1 is known from WO 2006 / 091265 A2. Another comparable securing device is known from US 9,228,375 B1.

[0002] Wall anchors are intended to provide a fixing point for securing a movable object in a location where there is otherwise no opportunity to protect the object from theft, for example in a garage, in a bicycle cellar or on an exterior wall of a building.

[0003] Wall anchors typically provide only a fixing point, while the locking mechanism is a separate, functionally independent lock that connects the movable object to the wall anchor. Therefore, using a wall anchor to lock an object always requires an additional lock.

[0004] Furthermore, for the secure locking mechanism, it is crucial that the wall anchor is reliably attached to the wall. For example, the wall anchor can be mounted using screws and wall plugs. However, it must be ensured that the screws cannot be easily unscrewed from the wall. A common way to prevent the wall anchor from being easily removed is to attach it to the wall in a fundamentally irreversible manner. This can be achieved, for example, by rendering the socket of the screws unusable after they have been screwed in. For instance, a steel ball can be inserted into the socket of a screw, blocking and / or deforming the hex socket so that even after the ball is removed, a hex key can no longer engage.For flexible use of the wall anchor, it can be advantageous if the wall anchor can be easily removed from the wall after installation, as long as the security of the locking mechanism is not compromised.

[0005] It is an object of the invention to provide a wall anchor that has extended functionality, can be used comfortably and flexibly, and can be mounted reversibly without compromising safety.

[0006] The problem is solved by a wall anchor having the features of claim 1. Advantageous embodiments of the invention are described in the dependent claims, the present description and the drawings.

[0007] The wall anchor according to the invention serves to secure movable objects to a wall, in particular a building wall, and comprises a locking mechanism and a housing designed for attachment to the wall and surrounding the locking mechanism. The housing has at least one insertion opening through which a closing end of an associated flexible locking element can be inserted into the housing, the locking mechanism being designed to lock the closing end inserted into the housing.

[0008] The flexible locking element in question can be, in particular, a chain, a cable, an arrangement of successive, articulated connecting rods, or any other elongated locking element suitable for connecting the movable object to be secured to the wall anchor. The object could, for example, be a bicycle. Therefore, the flexible locking element should ideally be one of those used in bicycle locks.

[0009] The closing end can be either one of the two ends of a longitudinal extension of the respective locking element, and it does not necessarily have to be specially designed. For example, in a locking element designed as a link chain, the closing end can simply be formed by the first or the last link of the chain. However, the closing end can also be specially designed, particularly with regard to its interaction with the locking mechanism, for example as a clamp that may have a special engagement structure for locking.

[0010] The end of the locking element opposite the closing end can also be designed as a closing end, so that the locking element has a first closing end and a second closing end. The first closing end and the second closing end are preferably designed to correspond to each other, so that either end can be selectively inserted through the insertion opening into the housing and locked therein.

[0011] Alternatively, the securing element can also have only a closing end. The other end of the securing element is then advantageously designed for attachment to the object. For example, the other end can have an eyelet through which the closing end can be threaded, so that the securing element forms a loop with which the object can be grasped and / or accessed. It is also conceivable that the other end is permanently attached to the object to be secured.

[0012] The locking element is associated with the wall anchor in that the wall anchor and the locking element are designed relative to each other such that the closing end of the locking element can be inserted through the insertion opening into the housing of the wall anchor and, once inserted into the housing, can be locked by means of the locking mechanism. Several locking elements, possibly of different types, can be used with the same wall anchor, particularly if they have corresponding closing ends. A wall anchor and an associated locking element can also form a single unit. In this respect, the invention also relates to a locking device comprising a wall anchor according to the invention and the associated locking element.

[0013] Because the wall anchor housing is designed for wall mounting, the entire wall anchor can be installed on the wall. The housing therefore serves not only to enclose the wall anchor externally and to conceal and protect the components within from unauthorized access, but also to secure the wall anchor itself.

[0014] The housing contains, in particular, the locking mechanism by which the closing end can be locked when inserted into the housing. Because the housing surrounds the locking mechanism, it is protected against external tampering. The insertion opening formed in the housing is preferably designed and arranged such that the locking mechanism is not accessible through the insertion opening, at least when the closing end is inserted into the housing through it.

[0015] The insertion opening can be designed, in particular, as a dead end. In other words, the wall anchor is preferably designed so that the closing element can only be inserted through the insertion opening into the housing of the wall anchor to a limited depth. Specifically, the closing element cannot be guided through the insertion opening into the housing and then out of the housing at a different point.

[0016] The locking mechanism allows the end piece inserted into the housing to be locked, i.e., prevented from being removed. Only when the lock is released can the end piece be moved out of the housing through the insertion opening and thus released from the wall anchor. The locking action of the locking mechanism with the end piece preferably takes place entirely within the housing to make it as difficult as possible to break the lock.

[0017] Unlike known wall anchors, which merely provide a fixing point for attaching a separate lock, the wall anchor according to the invention, by incorporating the locking mechanism itself, possesses the properties of a lock. This eliminates the need for a separate lock to secure an object using the wall anchor. Only a flexible locking element associated with the wall anchor is required for securing the object. This element can be stored within the wall anchor, for example, by locking the locking end to the wall anchor even when no object is being secured. Furthermore, the opposite end of the locking element can also be connected to the wall anchor. It is also conceivable that the opposite end is permanently connected to the wall anchor.

[0018] According to an advantageous embodiment, the housing has a base plate which can be attached to the wall by means of several fastening screws, wherein the housing has a cover which is designed to cover the fastening screws in a closed position, and wherein the cover is secured against detachment from the base plate when the closing end of the associated flexible locking element is inserted into the housing and locked, namely in particular precisely by the fact that the closing end of the associated flexible locking element is inserted into the housing.

[0019] To secure the hood to the base plate, it may be sufficient for the closing element to be inserted through the insertion opening into the housing. However, the locking mechanism of the closing element ensures that the closing element must first be unlocked to detach the hood from the base plate. In this way, the same locking mechanism can secure not only the closing element to the wall anchor, but also the hood to the base plate.

[0020] For attaching the base plate to the wall using the fixing screws, the base plate may have corresponding holes through which the fixing screws can be screwed into the wall. In this way, the base plate can form a back wall of the wall anchor. It may be designed so that the base plate is attached directly to the wall. However, other elements can also be arranged between the base plate and the wall. In particular, the wall anchor can include a protective plate that is positioned between the base plate and the wall and can extend beyond the base plate, especially in the direction from which the closing end of the locking element is inserted into the insertion opening, in order to protect the wall in this area from contamination or damage, particularly by the locking element.

[0021] The housing cover can be coupled to the base plate and, when the wall anchor is mounted, is coupled in such a way that it is held by the base plate attached to the wall. This corresponds to the aforementioned closed position. In In this position, the cover conceals the mounting screws that secure the base plate to the wall. As long as the cover is in the closed position, the mounting screws are inaccessible, preventing the base plate from being loosened, even though the connection to the wall is generally reversible. To loosen the base plate, the cover would first have to be removed. However, this is prevented when the closing end of the locking mechanism is inserted into the housing and locked in place, specifically by the fact that the closing end of the locking mechanism is inserted into the housing and locked in place.

[0022] This housing design eliminates the need for the wall anchor to be permanently or irreversibly fixed to the wall. Instead, it allows the use of screws that can be removed from the wall, but which are inaccessible from the outside when the wall anchor is installed. While removing the cover provides access to the screws, this is only possible if the locking mechanism is not inserted into the housing. Therefore, whenever an object is secured to the wall anchor via the locking mechanism, the cover reliably prevents access to the screws. This allows the wall anchor to be installed in a way that is reversible without compromising the security of the object's attachment.

[0023] The cover can be coupled to the base plate and brought into the closed position, particularly by means of a plug-and-turn connection, i.e., a connection achieved by a plugging motion followed by a turning motion. The plug-and-turn connection is preferably reversible, so that the cover can be removed from the closed position and detached from the base plate by an opposite movement. Such a plug-and-turn connection can, for example, be designed like a bayonet fitting.

[0024] Connecting the cover to the base plate can be achieved, in particular, by first moving the cover towards the base plate along an axis (plugging movement) and then rotating it relative to the base plate, especially around this axis, into its closed position (rotation movement). The aforementioned axis along which the plugging movement takes place is preferably oriented perpendicular to the plane of the base plate. However, the axis can also have a different orientation, in particular, it can be parallel to the plane of the base plate.

[0025] The hood can have coupling sections which, during the insertion movement, are inserted into corresponding coupling receptacles formed on the base plate. As a result of the subsequent rotation, the coupling sections of the hood then engage coupling sections of the base plate, each adjacent to a specific coupling receptacle in the direction of rotation. In this way, the hood, in its closed position, is positively connected to the base plate in a direction opposite to the direction of the insertion movement. Therefore, the hood must first be rotated from the closed position to an open position by an opening rotation before it can be moved away from the base plate in this direction.In particular, removing the hood from the base plate may therefore require that the insertion and rotation movements be performed in reverse order and in the opposite direction of movement.

[0026] It is further advantageous if the cover is designed (as explained above) to be moved from the closed position to an open position by an opening rotary motion, and is further designed to be locked against the opening rotary motion by the closing end of the associated flexible locking element inserted into the housing. In this way, the cover is automatically secured to the base plate when the closing end is inserted into the housing, so that access to the fastening screws by loosening the cover is always impossible when the locking element is connected to the wall anchor, and thus particularly impossible when an object is secured to the wall anchor by means of the locking element.

[0027] As an alternative to the aforementioned plug-and-turn motion, the hood can also be coupled to the base plate and moved into the closed position by means of a plug-and-slide connection, i.e., a connection achieved by a plug-in movement followed by a sliding movement. The plug-and-slide connection is also preferably reversible, so that the hood can be moved out of the closed position and detached from the base plate by an opposite movement sequence.

[0028] The same principles apply to the plug-and-slide connection as to the plug-and-turn connection, with the difference that the plugging movement, in which the cover is moved towards the base plate along an axis preferably perpendicular to the plane of the base plate, is not followed by a turning movement, but by a sliding movement, in which the cover is moved transversely, and in particular perpendicularly, to this axis relative to the base plate. The plugging movement allows coupling sections formed on the cover to be inserted into coupling receptacles formed on the base plate. As a result of the subsequent sliding movement, the coupling sections of the cover then engage coupling sections of the base plate, each of which is adjacent to a respective coupling receptacle in the sliding direction, so that in the closed position the cover is positively connected to the base plate in a direction opposite to the direction of the plugging movement.

[0029] In such an embodiment, the hood can be designed to be moved from the closed position to an open position by an opening sliding movement, in which it can be removed from the base plate by a movement opposite to the aforementioned insertion movement, and furthermore can be designed to be locked against the opening sliding movement by the closing end of the associated flexible locking part inserted into the housing, so that it can only be released from the base plate if no closing end is inserted into the housing.

[0030] The fact that the hood is designed to be locked against opening by the closing end of the associated flexible locking element inserted into the housing does not preclude the possibility that the hood can be additionally locked against opening by other means in the closed position. For example, it may be provided that the hood can be further secured against movement to the open position by a locking screw. This locking screw may be accessible from the outside and, for instance, connect the hood directly to the base plate.An externally accessible locking screw does not necessarily increase the security of the fastening screws against unauthorized access, but it can be useful to ensure that the hood is not accidentally moved into the open position, especially when inserting the closing end into the insertion opening or removing the closing end from the insertion opening, and thus detaches from the base plate.

[0031] According to the invention, the locking mechanism has at least one bolt which is movable between a locking position and an unlocking position, wherein the bolt is configured to lock the closing end of the associated flexible locking part inserted into the housing in the locking position, i.e. to prevent it from being removed from the housing, and to release the closing end inserted into the housing for removal from the housing in the unlocking position, and wherein the locking mechanism has an adjustable driver with at least one blocking section which is configured to block the bolt in its locking position in a blocking position of the driver.

[0032] The bolt preferably interacts directly with the closing end of the locking element. For example, the bolt can engage in a receptacle of the closing end, pass through a through-opening of the closing end, or engage behind another engagement structure of the closing end. If the bolt is designed to engage in a receptacle or pass through a through-opening, it can be hook-shaped. A closing end designed as a clamp can, for example, have an annular groove or a reduction in diameter as its engagement structure. In this case, the bolt can, in particular, have a forked end with which it engages in and / or behind the annular groove or the reduction in diameter.

[0033] The bolt is movable between the aforementioned locking position and the aforementioned unlocking position. However, this fundamental mobility can be restricted depending on the current closing state of the wall anchor. In particular, it can depend on the position of the follower, whose blocking section is designed (for example, by being appropriately arranged and shaped) so that, when the follower is in the blocking position, it blocks the bolt in its locking position, i.e., prevents it from moving into the unlocking position. As long as the follower is in the blocking position, the bolt cannot leave the locking position. Preferably, the follower is designed such that when the follower is moved into the blocking position, the blocking section forces the bolt into the locking position, provided it is not already in the locking position.

[0034] The drive element can be a single piece or a multi-piece design. If the drive element is a multi-piece design, there is preferably a clear drive relationship between the different parts of the drive element.

[0035] The blocking section can, for example, be designed as a cam on the driver. Furthermore, the locking mechanism can comprise a profile cylinder, preferably a half cylinder, according to DIN 18252:2018-05, and the driver can be designed as part of this profile cylinder. The blocking section can then be formed by the locking bolt (also referred to as the locking lug) of the profile cylinder. Alternatively, the driver can be designed separately from the locking bolt and coupled to the locking bolt in such a way that it can be adjusted by adjusting the locking bolt.

[0036] The driver can be adjustable, in particular, in that it can be moved by a user of the wall anchor, on the one hand, into the locking position and, on the other hand, from the locking position into at least one release position different from the locking position, in which the locking section releases the bolt for movement into its unlocking position. The adjustability of the driver can, in particular, correspond to the driver being rotatable about an axis of rotation. In this case, the locking section of the driver can be arranged such that, when the driver is adjusted, it moves in a circular path around the axis of rotation of the driver. Preferably, the locking section projects radially from the driver with respect to the axis of rotation.

[0037] In principle, the bolt can be moved between the locked and unlocked positions by displacement, rotation, a combination of displacement and rotation, or a specific sequence of such movements. Regardless of the specific path of movement, the bolt's mobility between the locked and unlocked positions preferably has only one degree of freedom. In particular, the bolt can be pivotally mounted about a pivot axis between the locked and unlocked positions. In this case, the aforementioned mobility of the bolt refers to pivotability about the aforementioned pivot axis. Such mobility of the bolt can contribute to a particularly compact design of the wall anchor.

[0038] According to an advantageous embodiment, the bolt is biased towards the unlocking position. Such biasing ensures that the bolt, as soon as it is released for movement into its unlocking position—in particular, it is neither forced into nor held in its locking position—automatically assumes its unlocking position. This can be advantageous for immediately releasing the closing end of the locking element when the driver is moved from its blocking position, especially without requiring the bolt to be moved into its unlocking position by a separate actuation.

[0039] However, it can also be advantageous to prevent the bolt from immediately assuming its unlocked position as soon as the follower leaves the blocking position. Otherwise, if the follower were to move, the closing end of the locking element could fall uncontrollably out of the wall anchor. Therefore, according to a further development of this embodiment, the bolt can have a retaining section designed to engage behind the closing end inserted into the housing when the bolt is in the locked position, such that the closing end holds the bolt in the locked position against its preload.

[0040] Even if the bolt is no longer blocked by the locking section of the actuator in the locked position and is thus free to move into the unlocked position, the bolt can initially remain in the locked position despite the preload due to its retaining section engaging behind the closing element. Only when this engagement is released does the bolt move into the unlocked position due to the preload, thereby releasing the closing element. This engagement can be released, for example, by manually moving the closing element relative to the bolt, particularly by lifting it. This ensures that a user is holding the closing element when the bolt moves from the locked to the unlocked position, preventing it from falling uncontrollably.

[0041] The retaining section can be formed, in particular, by a section of the bolt which projects from an engagement section of the bolt, with which the bolt engages lockingly into or on the closing end of the locking element, in a direction that is oriented at least substantially perpendicular to the direction of movement of the engagement section when the bolt is moved between its locking position and its unlocking position. In the case of a pivotable bolt, the retaining section can project from the engagement section, in particular, in a direction radial to the pivot axis (radially away from the pivot axis or, preferably, radially towards the pivot axis).

[0042] As an alternative to the aforementioned embodiment, in which the bolt is biased towards the unlocked position, it is also conceivable that the bolt is biased towards the locked position. The bolt can then move automatically into the locked position as long as it is not held in the unlocked position or forced into it. Moving the bolt into the unlocked position counteracts the bias and must therefore be done actively. In particular, the actuator can be designed, depending on its position, to force or hold the bolt in its unlocked position against its bias, for example by means of the blocking section or an additional drive section.

[0043] The bolt can thus be designed like a door latch, automatically securing the closing element as soon as it is inserted through the insertion opening into the housing. In principle, the closing element could already be locked to the wall anchor at this point. For improved security, however, the bolt is additionally blocked in its locked position by the blocking section of the follower in its blocking position. Similar to a door latch, the bolt can also be designed so that it can be forced from the locked position to the unlocked position by the closing element as it is inserted into the insertion opening. To release the closing element, however, the bolt must be actively moved from its locked position to its unlocked position, particularly by means of the follower.

[0044] Preferably, the actuator can only be adjusted by a user of the wall anchor if they possess a key. This could be, in particular, a key associated with the wall anchor or its locking mechanism.

[0045] According to a further advantageous embodiment, the locking mechanism comprises a locking cylinder or an electric actuator by means of which the driver can be adjusted. In particular, the locking cylinder or the actuator can be coupled to the driver in a drive-effective manner. Preferably, there is a clear relationship between a respective position or state of the locking cylinder or the actuator and the respective position of the driver. For example, the driver can be coupled to a cylinder core of the locking cylinder for simultaneous rotation. The driver and the cylinder core can be arranged coaxially and directly coupled to each other.The lock cylinder can be designed in a manner known per se, in particular comprising a cylinder housing and a cylinder core rotatably mounted in the cylinder housing, which is secured against rotation by tumblers as long as the tumblers are not moved into a position releasing the cylinder core by a key associated with the lock cylinder. The lock cylinder can, for example, have pin tumblers. Preferably, the lock cylinder has disc tumblers, which offer comparatively high security in a comparatively small installation space.

[0046] If both ends of the flexible locking element associated with the wall anchor are each designed as a locking end that can be locked to the wall anchor, it can be provided not only that either one or the other locking end can be inserted through the aforementioned insertion opening into the housing of the wall anchor and then locked, but alternatively or additionally, it can be provided that both locking ends can be locked to the wall anchor simultaneously.

[0047] This can be achieved by a further advantageous embodiment in which the housing has a first insertion opening and a second insertion opening through which a first closing end of the associated flexible locking part and a second closing end of the same or of a further flexible locking part associated with the wall anchor can be inserted into the housing, wherein the locking mechanism has a first bolt and a second bolt, wherein the adjustable follower has a first blocking section and a second blocking section, and wherein in the blocking position of the follower the first blocking section blocks the first bolt in its locking position and the second blocking section blocks the second bolt in its locking position.

[0048] The first insertion opening and the second insertion opening, the first closing end and the second closing end, the first latch and the second latch, as well as the first blocking section and the second blocking section, can each be designed in particular in one of the ways described above for the insertion opening, the closing end, the latch or the blocking section.

[0049] In particular, both the first bolt and the second bolt are movable between a locking position and an unlocking position, wherein the first bolt is designed to lock the respective closing end inserted through the first insertion opening into the housing in its locking position and to release it for removal from the housing in its unlocking position, and the second bolt is designed to lock the respective closing end inserted through the second insertion opening into the housing in its locking position and to release it for removal from the housing in its unlocking position.

[0050] It can be provided that the first closing element can be inserted into the housing through the first insertion opening and the second closing element can be inserted into the housing through the second insertion opening. Preferably, both the first closing element and the second closing element can be selectively inserted into the housing through either the first insertion opening or the second insertion opening, so that the wall anchor is not restricted by which closing element must be inserted into the housing through which insertion opening in order to be locked in the housing.

[0051] The first and second closing ends can be formed at opposite ends of the same locking element. However, the first and second closing ends can also be formed on different locking elements, allowing two independent locking elements to be attached to the wall anchor simultaneously. In this case, each of the two locking elements preferably has an eyelet at its end opposite the respective closing end, through which the respective closing end can be threaded, so that the locking element forms a loop with which the object can be grasped and / or gripped.

[0052] The first blocking section is specifically designed to block the first bolt in its locking position when the driver is in the blocking position, while the second blocking section is specifically designed to block the second bolt in its locking position when the driver is in the blocking position. Particularly in the case of a one-piece driver, but preferably also in the case of a multi-piece driver, the first and second blocking sections are adjusted together when the driver is adjusted. However, the first and second blocking sections can also perform different adjustment movements when the driver is adjusted.

[0053] Preferably, the first and second bars are identical in design. This simplifies the manufacturing of the wall anchor.

[0054] In its blocking position, the actuator, by means of a respective blocking section, locks both bolts in their respective locked positions. By moving the actuator out of the blocking position, for example via the aforementioned locking cylinder or the aforementioned electrical actuator, the bolts can then be released to move into their respective unlocked positions. It may be provided that the actuator can be adjusted to a release position in which both bolts are released. When the actuator is moved to this release position, both bolts can be released essentially simultaneously. However, it may also be advantageous for the actuator to have several functionally different release positions that can only be set alternatively to each other or sequentially.

[0055] According to a further advantageous embodiment, in a first release position of the actuator, the first bolt is released for movement into its unlocked position, and in a second release position of the actuator, the second bolt is released for movement into its unlocked position. Such a design makes it possible to distribute the release of each bolt, and thus of each locking element secured by the bolt, across two different positions of the actuator and thus across two different states of the wall anchor. In particular, the wall anchor can be designed such that the two locking elements inserted into the housing can only be released and detached from the wall anchor sequentially.

[0056] In a further advantageous embodiment, it can be provided that in the first release position of the driver, one of the blocking sections, in particular the second blocking section, blocks the second bolt in its locked position, and / or in the second release position of the driver, one of the blocking sections, in particular the second blocking section, blocks the first bolt in its locked position. However, it is not necessary for both to occur simultaneously. In one of the two release positions of the driver, in particular the second release position, both bolts can also be released for movement into their respective unlocked positions.

[0057] If, in a given release position of the actuator, one of the bolts is released for movement into its unlocked position, and the other bolt is blocked in its locked position by one of the actuator's blocking sections, then in this release position, only the closing end of the associated flexible locking element can be inserted into and locked, or released and removed from the wall anchor housing through the corresponding of the two insertion openings. At the other insertion opening, however, due to the blocked bolt there, neither insertion and locking nor release of a closing end is possible. Thus, by setting the actuator to one of the two release positions, a user of the wall anchor can limit themselves to connecting the closing end of the locking element to the wall anchor at one or the other of the two insertion openings.to detach it from this. This simplifies the handling of the wall anchor.

[0058] In principle, it can be provided that the driver is adjustable in a first adjustment direction from the blocking position to the first release position and in a second adjustment direction opposite to this, from the blocking position to the second release position. In particular, the driver can only be adjustable from the first release position to the second release position via the blocking position and from the second release position to the first release position via the blocking position.

[0059] According to a further advantageous embodiment, the follower can be adjusted from the locked position, through the first release position, to the second release position as a result of a parallel opening movement. In other words, the follower can be moved from the locked position in an opening direction to the first release position, and from the first release position further in the same opening direction to the second release position. Conversely, the follower can then be adjusted from the second release position, through the first release position, to the locked position as a result of a parallel closing movement.In other words, the actuator can then be moved from the second release position into the first release position in a closing direction opposite to the opening direction, and from the first release position further into the same closing direction until it reaches the blocking position. The opening and closing directions can, in particular, be directions of rotation.

[0060] The first bolt can be pre-tensioned into its locked or unlocked position by a spring. Similarly, the second bolt can be pre-tensioned into its locked or unlocked position by a spring. In particular, the first bolt can be pre-tensioned by a first spring, while the second bolt is pre-tensioned by a second spring separate from the first. The first and second springs can act on their respective bolts as either tension or compression springs, with each spring preferably acting directly on the respective bolt. Furthermore, both springs can be supported, in particular, on the housing of the wall anchor or on a stationary bearing structure of the wall anchor arranged within the housing, on which, for example, the follower can also be rotatably mounted.

[0061] According to a further advantageous embodiment, the locking mechanism has a common spring that biases both the first and second bolts. In this embodiment, both bolts are biased, with the respective bias being exerted on both bolts by the same, in particular one-piece, spring. Preferably, the spring is supported against the other bolt to bias one of the two bolts. In particular, the spring is not connected to any other element of the wall anchor besides the two bolts. The spring can bias the two bolts, for example, towards each other or away from each other. In particular, the spring can bias both the first and the second bolts into the unlocked position. Alternatively, it can be provided that the spring biases both the first and the second bolts into the locked position.It is also possible, in principle, for the spring to bias one of the two latches into the locking position and the other into the unlocking position.

[0062] According to a further advantageous embodiment, the driver is arranged between the first and second bolts. Such an arrangement allows for a particularly compact design of the wall anchor. Furthermore, this arrangement of the driver simplifies the direct interaction of the driver's locking sections with the bolts.

[0063] The invention will be further explained below using the figures as examples only. Fig. 1 shows an embodiment of a wall anchor according to the invention in an exploded view. Fig. 2 shows the hood of the Fig. 1 the embodiment shown from a different perspective than in Fig. 1 Figures 3 to 7 show parts of the in Fig. 1The embodiment shown is in various positions.

[0064] The figures each show the same embodiment of a wall anchor 11 according to the invention, the basic structure of which is shown in the exploded view of the Fig. 1 The wall anchor 11 comprises a housing 13 with a base plate 15 and a cover 17. The base plate 15 has three holes 19 for fastening screws 21 (see figure). Fig. 3 ) designed so that the base plate 15 can be attached to a wall (not shown) by means of the mounting space 21.

[0065] The base plate 15 and the cap 17 each have a substantially circular cross-section. The base plate 15 is at least substantially flat. The cap 17, on the other hand, is curved such that, when connected to the base plate 15, it encloses an interior space of the wall anchor 11 together with the base plate 15. In particular, the cap 17 has at least approximately the shape of a hemispherical shell. When connected to the base plate 15, the cap 17 covers the fastening screws 21, so that they are not accessible from the outside. This is because the heads of the fastening screws 21 are then located in the aforementioned interior space of the wall anchor 11, which is bounded externally on the one hand by the cap 17 and on the other hand by the base plate 15, with openings 59, 61, 63 formed in the cap 17 (see below) being considered part of the cap 17.The screw shafts of the fastening screws 21 extend out of this interior space, but into the wall and are therefore also inaccessible.

[0066] The cover 17 is designed to be connected to the base plate 15 via a plug-and-turn connection similar to a bayonet fitting. For this purpose, the cover 17 has coupling sections 23 that project radially inwards from the circular edge of the cover 17, along which the cover 17 is connected to the base plate 15 (compare Fig. 2 ). Corresponding coupling receptacles 25 are formed on the base plate 15, so that when the hood 17 is placed on the base plate 15 by a plugging motion, each coupling section 23 of the hood 17 is plugged into one of the respective coupling receptacles 25 of the base plate 15.

[0067] The cover 17 can then be brought into a closed position relative to the base plate 15 by a rotational movement (closing rotation) about an axis of rotation perpendicular to the plane of the base plate 15. In this closed position, each coupling section 23 of the cover 17 engages a corresponding coupling section 27 of the base plate 15, which, in the direction of the rotation, is adjacent to one of the coupling receptacles 25 of the base plate 15. Thus, in its closed position, the coupling sections 23 of the cover 17 engage the coupling sections 27 of the base plate 15 in the opposite direction to the insertion movement. Therefore, the cover 17 cannot be removed from the base plate 15 in this direction without first being moved into an open position by a rotational movement opposite to the aforementioned rotational movement (opening rotation).To prevent the hood 17 from unintentionally detaching from the base plate 15, the hood 17 can be secured in the closed position relative to the base plate 15 against the opening rotational movement by means of a locking screw (not shown).

[0068] The wall anchor 11 further comprises a protective plate 29, which is designed to rest against the outer surface of the base plate 15, so that, in the assembled state of the wall anchor 11, it is positioned between the housing 13 and the wall. The protective plate 29 has bores 31 corresponding to the bores 19 of the base plate 15, allowing the fastening screws 21 to extend through the protective plate 29. The protective plate 29 extends beyond the base plate 15 in a direction perpendicular to the direction of the aforementioned insertion movement. This allows the protective plate 29 to cover an area of ​​the wall extending beyond the cross-section of the housing 13, thus protecting it from damage or contamination caused by the use of the wall anchor 11.

[0069] Two bearing pins 33 extend from the outside through two further bores 19' in the base plate 15 into the aforementioned interior of the housing 13. The bearing pins 33 are oriented perpendicular to the base plate 15. All other elements, in particular at least one locking mechanism, of the wall anchor 11 are arranged completely within the housing 13.

[0070] The locking mechanism comprises a first bolt 35 and a second bolt 37, each designed as a pivot bolt. For this purpose, the two bolts 35, 37 are each pivotally mounted on one of the two bearing pins 33 about a pivot axis defined by the respective bearing pin 33 and are pivotally movable at least between a locked position and an unlocked position, which with reference to the Figs. 3 to 7 This will be explained in more detail.

[0071] The bolts 35, 37 each have a longitudinal extension, at one end of which they are supported by the respective bearing pin 33. At the opposite end of the longitudinal extension, the bolts 35, 37 each have an engagement section 39 oriented in the direction of rotation around the pivot axis. This gives the bolts 35, 37 a hook shape. At the free end of the engagement section 39, a retaining section 41 is formed, which is shorter than the engagement section 39 and projects perpendicularly from the engagement section 39, namely in a radial direction with respect to the pivot axis.

[0072] The two bolts 35 and 37 are identical in construction. They are arranged such that their engagement sections 39 point in opposite directions, away from each other. A spring 43, designed as a helical spring, connects the bolts 35 and 37 at their respective ends furthest from the pivot axis, and the spring 43 biases them towards each other. The spring 43 thus acts as a tension spring. The spring 43 is directly coupled to both the first bolt 35 and the second bolt 37.

[0073] A driver 45 is arranged between the two locking bars 35, 37. The driver 45 is rotatably mounted on a bearing structure 47, which is connected to the base plate 15 via bearing pins 33. The axis of rotation of the driver 45 is parallel to the pivot axes of the locking bars 35, 37 and to the direction of the aforementioned insertion movement by which the cover 17 is connected to the base plate 15. In particular, the axis of rotation is thus oriented perpendicular to the base plate 15. The driver 45 has a first locking section 49 and a second locking section 51, which are designed as projections and extend from the driver 45 in a radial direction with respect to the axis of rotation, at least substantially opposite to each other.

[0074] The base plate 15 has three locking projections 53, each formed separately from the base plate 15 and inserted into its inner surface. The driver 45 has corresponding locking recesses (not visible in the figures) on its side facing the base plate 15. This allows the driver 45 to lock into at least the three locking projections when rotated relative to the base plate 15. Figs. 3 to 7 The positions of the driver shown on the base plate 15.

[0075] The locking mechanism further comprises a locking cylinder 55, which is connected to the base plate 15 via the same bearing structure 47 as the driver 45. While a cylinder housing of the locking cylinder 55 is rotationally fixed to the bearing structure 47 by means of a positive engagement, a cylinder core of the locking cylinder 55 is operated by means of a key 57 assigned to the locking cylinder 55 (see figure). Figs. 3 to 7The driver 45 is rotatable relative to the cylinder housing about the aforementioned axis of rotation. The driver 45 is arranged in axial extension of the cylinder core and is coupled to it for common rotation, or at least can be coupled to it. In this way, by actuating the locking cylinder 55 with the associated key 57, the driver 45 can be rotated, which in turn, by means of the blocking sections 49, 51, can actuate the bolts 35, 37 and thus, depending on its position, block or release them.

[0076] In order to be able to insert the key 57 from outside the wall anchor 11 into the locking cylinder 55 arranged inside the housing 13, the hood 17 has a central key insertion opening 59, to which the locking cylinder 55 extends with its end opposite the driver 45.

[0077] The hood 17 further comprises a first insertion opening 61 and a second insertion opening 63. Through each of the two insertion openings 61, 63, a first closing end 65 or a second closing end 67 of a flexible locking element 69, designed as a link chain in the example shown, can be inserted into the housing 13, in order to then be locked in the housing 13 by means of one of the respective latches 35, 37, i.e., to be prevented from being removed again from the insertion opening 61 or 63 (see figure). Figs. 3 to 7 The two closing ends 65 and 67 are the first and last chain links of the locking element 69, respectively. In principle, the first closing end 65 and the second closing end 67 can also be formed by the respective ends of two different locking elements 69.

[0078] The insertion openings 61, 63 are arranged such that a closing end 65 or 67 inserted through the first insertion opening 61 can be locked by the first latch 35, and a closing end 65 or 67 inserted through the second insertion opening 63 can be locked by the second latch 37. Locking is achieved by the closing ends 65, 67, which are designed as chain links, being engaged by the engagement section 39 of the respective latch 35 or 37.

[0079] The insertion openings 61, 63 each have a shape that is at least substantially complementary to the closing elements 65, 67, so that the closing elements 65, 67 inserted into the housing 13 have very little play relative to the insertion openings 61, 63. Conversely, the cover 17 also has very little play relative to the closing elements 65, 67, so that it is locked against the aforementioned opening rotation relative to the base plate 15 by a single closing element 65 or 67 inserted into the housing 13. In this way, as long as a closing element 65 or 67 is inserted into the housing 13 and, in particular, locked, the cover 17 cannot be detached from the base plate 15, so that the fastening screws 21 cannot be unscrewed either.

[0080] In the Figs. 3 to 7Various states of the wall anchor 11 are shown, whereby, to better illustrate the respective positions of the two bolts 35, 37 and the driver 45, the hood 17 and the bearing structure 47 are not shown. Furthermore, little more than the two closing elements 65, 67 of the locking element 69 are shown.

[0081] In Fig. 3The wall anchor 11, together with the locking element 69, is in a locked state in which the first closing end 65 is inserted into the first insertion opening 61 and locked by the first bolt 35, i.e., prevented from being removed from the first insertion opening 61, and the second closing end 67 is inserted into the second insertion opening 63 and locked by the second bolt 37, i.e., prevented from being removed from the second insertion opening 63. The driver 45 is in a blocking position in which the first blocking section 49 of the driver 45 blocks the first bolt 35 in its locking position, and the second blocking section 51 of the driver 45 blocks the second bolt 37 in its locking position.Due to the coupling of the driver 45 with the lock cylinder 55, the driver 45 is locked by the lock cylinder 55 against rotation from this blocking position as long as the cylinder core of the lock cylinder 55 is not released for rotation by means of the associated key 57 and is not rotated.

[0082] Using key 57, the driver 45 can be removed from the Fig. 3 The shown blocking position can be reversed by a parallel opening movement (preferably clockwise; see the arrow in Fig. 3 ) into one in the Figs. 4 and 5 The first release position shown can be rotated, and beyond the first release position into a position that is in the Figs. 6 and 7 The second release position shown can be rotated, in which the driver 45 engages in conjunction with the detent projections 53 provided on the base plate 15.

[0083] In the first release position (see Figs. 4 and 5The driver 45 is rotated relative to the blocking position such that the first blocking section 49 no longer blocks the first bolt 35 in its locked position, but releases it for movement into its unlocked position, whereas the second blocking section 51 continues to block the second bolt 37 in its locked position. The spring 43 does bias the first bolt 35 into its unlocked position. However, because the retaining section 41 of the first bolt 35 engages the first closing end 65 in the direction of rotation around the pivot axis of the first bolt 35, the first bolt 35 is initially held in its locked position (see figure). Fig. 4). Only when the first closing element 65 is lifted, i.e., slightly offset towards the pivot axis, so that the retaining section 41 no longer engages behind the first closing element 65, does the spring 43 pull the first bolt 35 towards the second bolt 37, so that the first bolt 35 is pivoted by the spring 43 into its unlocked position (cf. Fig. 5 ). The first closing element 65 is thereby released and can be removed from the first insertion opening 61 as shown.

[0084] If the driver 45 is subsequently moved beyond the first release position into the second release position by means of the key 57 (see Figs. 6 and 7When the second locking section 51 of the driver 45 is rotated, it forces the first bolt 35 back into its locking position, thereby also re-tensioning the spring 43. Simultaneously, this releases the second bolt 37 for movement into its unlocked position, to which it is biased by the spring 43 (see figure). Fig. 6 However, the retaining section 41 of the second bolt 37, by engaging behind the second closing end 67, prevents the second bolt 37 from immediately moving into its unlocked position. For this to happen, the second closing end 67 must first be lifted so that the retaining section 41 of the second closing end 67 no longer engages behind it, whereupon the second bolt 37 is pivoted into its unlocked position by the spring 43 (see figure). Fig. 7 ). The second closing element 67 is thereby released and can be removed from the second insertion opening 63.

[0085] The insertion and locking of the two closing elements 65, 67 on the wall anchor 11 is essentially carried out in reverse order. When the follower 45 is in the second release position and the second bolt 37 assumes its unlocked position due to the preload (see Figure 1) Fig. 7 ), the second closing end 67 can be inserted into the second insertion opening. By rotating the driver 45 into the first release position, the second bolt 37 is then forced by the second blocking section 51 into its locking position, so that the second bolt 37 with its engagement section 39 engages the second closing end 67 and thereby locks it; at the same time, the first bolt 35 is no longer blocked in its locking position by the second blocking section 51, but is released for movement into its unlocking position, into which it is pivoted by the preload of the spring 43 (cf. Fig. 5In this state, the first closing element 65 can be inserted into the first insertion opening 61 and then the driver 45 can be rotated into its blocking position, so that the first blocking section 49 of the driver 45 forces the first bolt 35 into its locking position, in which the first bolt 35 with its engagement section 39 engages the first closing element 65 and thus locks it (cf. Fig. 3 In the subsequently assumed blocking position of the driver 45, the first bolt 35 and the second bolt 37 are again locked in their respective locking positions by the first blocking section 49 and the second blocking section 51 of the driver 45, respectively. The key 57 can then be removed from the lock cylinder 55. Preferably, the key 57 can only be removed from the lock cylinder 55 when the driver 45 is in the blocking position.

[0086] To secure a movable object to the wall anchor 11 via the locking element 69, or to release the object from the wall anchor 11, the driver 45 does not necessarily need to be moved from the blocking position to the second locking position, or vice versa. In many cases, it may suffice to adjust the driver 45 between the blocking position and the first locking position to lock or release only one closing end 65 of the locking element 69 to the wall anchor 11 via the first insertion opening 61, while the other closing end 67 can remain continuously locked to the wall anchor 11. However, the illustrated embodiment of a wall anchor 11 according to the invention also offers the possibility of completely releasing the locking element 69 from the wall anchor 11 by adjusting the driver 45 to the second release position. Reference sign

[0087] 11 Wall anchor 13 Housing 15 Base plate 17 Hood 19, 19' Base plate bore 21 Fastening screw 23 Hood coupling section 25 Coupling receptacle 27 Base plate coupling section 29 Protective plate 31 Protective plate bore 33 Bearing pin 35 First bolt 37 Second bolt 39 Engagement section 41 Retaining section 43 Spring 45 Driver 47 Bearing structure 49 First locking section 51 Second locking section 53 Detent projection 55 Locking cylinder 57 Key 59 Key insertion opening 61 First insertion opening 63 Second insertion opening 65 First locking end 67 Second locking end 69 Safety element

Claims

1. A wall anchor (11) for securing movable objects to a wall, in particular a building wall, said wall anchor (11) comprising a locking mechanism and a housing (13) which is configured for fastening to the wall and which surrounds the locking mechanism, wherein the housing (13) has at least one introduction opening (61, 63) through which a closing end (65, 67) of an associated flexible securing part (69) can be introduced into the housing (13), wherein the locking mechanism is configured to lock the closing end (65, 67) introduced into the housing (13), and wherein the locking mechanism has at least one latch (35, 37) which is movable between a locking position and an unlocking position, wherein the latch (35, 37) is configured, in the locking position, to lock the closing end (65, 67) of the associated flexible securing part (69), said closing end being introduced into the housing (13), and, in the unlocking position, to release the closing end (65, 67) introduced into the housing (13) for a removal from the housing (13), characterized in that the locking mechanism has an adjustable entrainer (45) comprising at least one blocking section (49, 51) which is configured, in a blocking position of the entrainer (45), to block the latch (35, 37) in its locking position.

2. . A wall anchor according to claim 1, wherein the latch (35, 37) is pivotably supported about a pivot axis between the locking position and the unlocking position.

3. . A wall anchor according to claim 1 or 2, wherein the latch (35, 37) is preloaded in the direction of the unlocking position.

4. . A wall anchor according to claim 3, wherein the latch (35, 37) has a retaining section (41) which, in the locking position of the latch (35, 37), is configured to engage behind the closing end (65, 67) introduced into the housing (13) such that the latch (35, 37) is held against its preload in the locking position by the closing end (65, 67).

5. . A wall anchor according to any one of the preceding claims, wherein the locking mechanism has a lock cylinder (55) or an electric actuator by means of which the entrainer (45) can be adjusted.

6. . A wall anchor according to any one of the preceding claims, wherein the housing (13) has a first introduction opening (61) and a second introduction opening (63), through which a first closing end (65) of the associated flexible securing part (69) and a second closing end (67) of the same or a further associated flexible securing part (69) can be introduced into the housing (13), wherein the locking mechanism (10) has a first latch (35) and a second latch (37), wherein the adjustable entrainer (45) has a first blocking section (49) and a second blocking section (51), and wherein, in the blocking position of the entrainer (45), the first blocking section (49) blocks the first latch (35) in its locking position and the second blocking section (51) blocks the second latch (37) in its locking position.

7. . A wall anchor according to claim 6, wherein, in a first release position of the entrainer (45), the first latch (35) is released for a movement into its unlocking position and, in a second release position of the entrainer (45), the second latch (37) is released for a movement into its unlocking position.

8. . A wall anchor according to claim 7, wherein, in the first release position of the entrainer (45), one of the blocking sections (49, 51) blocks the second latch (37) in its locking position and / or, in the second release position of the entrainer (45), one of the blocking sections (49, 51) blocks the first latch (35) in its locking position.

9. . A wall anchor according to claim 7 or 8, wherein the entrainer (45) can be adjusted from the blocking position via the first release position into the second release position as a result of an opening movement in the same direction.

10. . A wall anchor according to any one of the claims 6 to 9, wherein the locking mechanism comprises a common spring (43) which preloads the first latch (35) and the second latch (37).

11. . A wall anchor according to any one of the claims 6 to 10, wherein the entrainer (45) is arranged between the first latch (35) and the second latch (37).

12. . A wall anchor according to any one of the preceding claims, wherein the housing (13) has a base plate (15) which can be fastened to the wall by means of a plurality of fastening screws (21), wherein the housing (13) has a cover (17) which is configured to cover the fastening screws (21) in a closed position, and wherein the cover (17) is secured against a release from the base plate (15) when the closing end (65, 67) of the associated flexible securing part (69) is introduced into the housing (13) and is locked, namely precisely by the closing end (65, 67) of the associated flexible securing part (69) being introduced into the housing (13).

13. . A wall anchor according to claim 12, wherein the cover (17) can be coupled to the base plate (15) due to a plug-in rotary connection or a plug-in slide connection and can be brought into the closed position.

14. . A wall anchor according to claim 12 or 13, wherein the cover (17) is configured to be brought from the closed position into an open position by an opening rotary movement or an opening sliding movement, wherein the cover (17) is further configured to be blocked against the opening rotary movement or the opening sliding movement by the closing end (65, 67) of the associated flexible securing part (69), said closing end being introduced into the housing (13).